Washington Redskins coach Mike Shanahan said rookie running back Roy Helu was injured (toe and leg) in the Giants game, but coaches didn’t realize how badly until they reviewed game tape and saw Helu’s diminished effectiveness.

Shanahan said cornerback Josh Wilson suffered a blow to the head along the sideline late in the game and was “a little woozy, a little dizzy.” Wilson will have tests for a concussion on Tuesday. Wilson didn’t return to the game after suffering the injury.

Shanahan said his team’s performance against the Giants is the kind he wants the Redskins to be known for, with a balanced offensive attack and strong defense. He said he can’t help but wonder about the Redskins record this season had they not suffered so many injuries.

Shanahan said he was pleased with the play of Oshiomogho Atogwe, who took 44 snaps against the Giants after he was limited by injuries in previous weeks. Last week against the Patriots, Atogwe played only eight snaps.

Shanahan said the absence of tight end Fred Davis has forced him and offensive coordinator Kyle Shanahan to become more innovative with their offensive schemes and has allowed them to learn a little more about their other offensive players.

Shanahan said Davis and left tackle Trent Williams are allowed at the Redskins facility during their suspensions. He said he hasn’t spoken to either player yet to lay out the terms, but will go into greater detail Wednesday after speaking to them.

Shanahan said it was good for Brian Orakpo to finally get his first full sack against an NFC East opponent so that struggle isn’t weighing on him. The coach said Orakpo had a very good all-around game against the Giants, pressuring New York quarterback Eli Manning and forcing a holding call in addition to the sack.

The coach praised the play of rookie left tackle Willie Smith, who went up against Giants’ lineman Jason Pierre-Paul. The coach said there were obvious mistakes and growing pains, but said he’s encouraged by Smith’s development.